Rocker for chairs.



No. 65l,322. Patented June 5, I900. J. F. BARTLETT.

ROCKER FOR CHAIRS.

(Application filed. July 24, 1899;

(No Model.)

ms PETEhS co. FNOYO-LITNO.,WASHINGTON n UNITED STATES PATENT EEICE.

JAMES F. BARTLETT, OF CHICAGO, ILLINOIS.

ROCKER FOR CHAIRS.

SPECIFICATION forming part of Letters Patent No. 651,322, dated June 5, 1900.

Application filed July 24, 1899- To all whom, it may concern:

Be it known that I, JAMES F. BARTLETT, a citizen of the United States, residing at Ohicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Rockers for Chairs, of which the following is a specification.

This invention relates to improvements in rocking-chairs or in the rockers therefor; and it consists in certain peculiarities of the construction, novel arrangement, and operation of the parts thereof, as will be hereinafter more fully set forth and specifically claimed.

One object of my invention is to provide rockers for chairs which shall have pneumatic treads, thus affording a resilient seat or chair which when rocked will be noiseless by reason of the cushioning effect of the treads thereof.

Another object of myinvention is to so construct the rockers as to enable the treads thereof to be readily secured in place and in such a manner as to prevent the chair being tipped over backwardly.

In order to enable others skilled in the art to which my invention pertains to make and use the same, I will now proceed to describe it, referring to the accompanying drawings, in which- Figure 1 is a view in side elevation of a rocker embodying one form of my invention. Fig. 2 is a longitudinal View, partly in section and partly in elevation, of one end of the rocker, showing one means of securing the tread thereto and illustrating the tread by dotted line. Fig. 3 is an enlarged crosssectional view taken on line 3 3 of Fig. 1. Fig. 4: is a similar view taken on line 4 4: of Fig. 5; and Fig. 5 is a View in side elevation of a portion of the rocker, showing a modification in its construction.

Similar letters refer to like parts throughout the different views of the drawings.

A represents a rocker which is slightly curved and may be made of wood or other suitable material. The lower or tread part of the rocker is provided with a longitudinal groove a, in which rests a rubber tube B, which may be inflated through a valve-stem Serial No. 724,932. (No model.)

12, passing through a suitable opening in the central portion of the rocker. The front end of the rocker is provided with a longitudinal opening 0, in which an end of'the tube B may be inserted and held in place by means of a bolt 0 passing through suitable openings in the tube and rocker. The rear portion of the rocker is provided with a block D, between which and the rocker may be placed the rear end of the tube, which is secured in place by means of bolts 01 or otherwise. The front portion of the block D is beveled, as shown in' Fig. 1 of the drawings, so as to give a similar shape to the rear portion of the tube B or tread.

Instead of providing'the front end of the rocker with the opening 0, as shown in Figs. 1

and 2 of the drawings, I may secure the front' end of the tube or tread B thereto by means of a block D and bolts d (see Figs. L and 5) in a similar manner to that used in securing the rear end of the tread to the rocker and just above described.

In constructing my rocker one end of the tube B is inserted into the opening 0, when the bolt 0 may be passed therethrough, after which the tube may be placed in the groove a and secured to the other end of the rocker by. means of the block D, when the tube may be inflated through the medium of an airpump and the valve 6, which extends through the rocker, as above described.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

The combination with a rocker, provided in its lower surface with a longitudinal groove, and having at one of its ends a 1ongitudinal opening of an inflatable tube located at one of its ends in the said opening of the rocker, and resting in said groove, a block having means to secure it to the rear end of the rocker, and to clamp the tube therebetwcen, substantially as described.

JAMES F. BARTLETT.

Witnesses:

CHAS. C. TILLMAN, J. B. SCUDDER. 

